Answer: Becomes three times.
- A Remains unchanged
- B Becomes three times
- C Becomes one-third
- D Becomes nine times
Correct answer: B. Becomes three times
Explanation: With the battery connected V is fixed. Q = CV and C becomes 3 times, so the charge also becomes three times its original value.
Field lines (radial) and equipotential lines (concentric circles) of a point charge. Equipotential surfaces are always perpendicular to the field lines. Image: Sjlegg, Public Domain, via Wikimedia Commons.
Concept context
Electric potential, equipotential surfaces, potential energy of charge systems, conductors, dielectrics, capacitors, combinations, and energy storage.
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